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Re: Not enough vacuum for power breaks?
[Re: nz383man]
#1416283
04/08/13 12:00 PM
04/08/13 12:00 PM
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Joined: Jan 2008
Posts: 3,886
Lost and Spaced
bboogieart
master
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master
Joined: Jan 2008
Posts: 3,886
Lost and Spaced
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Do you have stainless lines? I have read that they are hard to get sealed.
The problem you have is similar to what my 2000 mini van was doing last year. I know the vehihicles are different but the symptoms are very similar.
The pedal would sink at start-up and then get fine with use. Turned out there was a small leak in the front line and some air would get in after shut-down, and once running it would bleed itself out again.
I have mechanical Aptitude.
I can screw up anything.
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Re: Not enough vacuum for power breaks?
[Re: RapidRobert]
#1416285
04/08/13 11:45 PM
04/08/13 11:45 PM
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Joined: Feb 2004
Posts: 7,196
Harrisburg, Pa.
screamindriver
master
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master
Joined: Feb 2004
Posts: 7,196
Harrisburg, Pa.
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Quote:
Quote:
Yea thats about what mine has been doing, except that the pedal travel is my problem and not just a very stiff pedal.
I'm not a PB guru but the excessive travel sure makes me think that something other than a lack of vacuum is going on
And you would be correct..There has to be something else being overlooked...As everyone has pointed out lack of vacuum will result in the pedal getting harder to push,resulting in LESS travel and in turn the brakes won't activate like they will with the power assist...That's not what you're describing from what I'm reading..
Air in the system, brakes not adjusted properly,mismatched components are the highlights to check into...
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Re: Not enough vacuum for power breaks?
[Re: markshemiworld]
#1416286
04/09/13 01:04 AM
04/09/13 01:04 AM
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Joined: Jan 2003
Posts: 1,760
Windsor, ON, Canada
Diplomat360
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,760
Windsor, ON, Canada
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I run a hotter hydraulic cam and my doube (tandem) chamber power brake booster handles as low as the 5-6" vacum without any ill impact on the brake system.
Pedal remains stiff, brakes are activie all the time, grabbing very well, no problems.
This is not the 1st time I have done a hotter combo like that, my previous one was with a stock factory 11" power booster with a 7" vacum signal...no problems either...so they can certainly work in very low vacum situations.
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